the extension init does not get run when run integration test with @vscode/test-electron

[loichinh350]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: build from head
• OS Version: mac

Steps to Reproduce:

1. have a simple test-electron code, inside the neovim github https://github.com/vscode-neovim/vscode-neovim

import * as path from "path";

import { runTests } from "@vscode/test-electron";

async function main(): Promise<void> {
    try {
        // The folder containing the Extension Manifest package.json
        // Passed to `--extensionDevelopmentPath`
        const extensionDevelopmentPath = path.resolve(__dirname, "../../");

        // The path to the extension test runner script
        const extensionTestsPath = path.resolve(__dirname, "./integ/index");

        // Download VS Code, unzip it and run the integration test
        await runTests({
            vscodeExecutablePath: "/VSCode-darwin-arm64/Code - OSS.app/Contents/MacOS/Electron",
            launchArgs: ["--disable-extensions"],
            extensionDevelopmentPath,
            extensionTestsPath,
            extensionTestsEnv: {
                NEOVIM_DEBUG: "1",
                NEOVIM_DEBUG_HOST: "127.0.0.1",
                NEOVIM_DEBUG_PORT: "4000",
                NEOVIM_TEST_REGEX: "Basic editing and navigation Normal mode",
            },
        });
    } catch (err) {
        console.error(err);
        console.error("Failed to run tests");
        // process.exit(1);
    } finally {
        console.log("Finish");
    }
}

main();

4. When run this test, the src/extension.ts of neovim does not get run. why is that?